<template>
  <view>
    <view class="goods-list">
      <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
        <my-goods :goods="goods"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        //请求参数对象
        queryObj: {
          query: '',
          cid: '',
          pagenum: 1,
          pagesize: 20
        },
        goodsList: [],
        total: 0,
        //节流阀
        isloding: false
      };
    },

    onLoad(options) {
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      this.getGoodsList()
    },

    methods: {
      async getGoodsList(cb) {
        //打开节流阀
        this.isloding = true
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
        //关闭节流阀
        this.isloding = false
        // 只要数据请求完毕，就立即按需调用 cb 回调函数
        cb && cb()
        if (res.meta.status !== 200) return uni.showMsg()

        this.goodsList = [...this.goodsList, ...res.message.goods]
        this.total = res.message.total


      },

      gotoDetail(item) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },

      onReachBottom() {
        //判断是否还有下一页的数据
        if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕!')

        // 判断是否正在请求其它数据，如果是，则不发起额外的请求
        if (this.isloding) return

        //让页码值自增 +1
        this.queryObj.pagenum++
        this.getGoodsList()

      },

      onPullDownRefresh() {
        //重置关键数据
        this.queryObj.pagenum = 1
        this.total = 0
        this.isloding = false
        this.goodsList = []

        //重新发起数据请求
        this.getGoodsList(() => uni.stopPullDownRefresh())

      },



    },

  }
</script>

<style lang="scss">

</style>